This widget is designed to squeeze nicely between a CD and motor shaft, allowing the motor to spin the CD. It has been specifically designed as a part in Questacon Smart Skills Teacher Workshop 2- "3D Zoetrope".

Photos show the widget and then the widget in place to create a simple 3D Zoetrope.

More details about making the zoetrope can be found at: http://www.questacon.edu.au/outreach/programmes/questacon-smart-skills-initiative/workshops/resources/teacher-workshop-2-3d-zoetrope